Geemarc PhotoPhone - Manuel (Page 12)

Adjust the TONE and VOLUME buttons to fit the
levels to your own hearing requirements.
2 - SENDING VOLUME LEVEL ADJUSTMENT
If your voice is quiet or called parties have difficulty
hearing you, you can increase the sending level
volume with the switch located on the upper side.
You can also decrease the sending volume if
required. Min Normal
Maxi
TONE
Bass
+10db max
Treble
+10db max
Normal
VOLUME
0dB
+30db max
30dB ON
15dB OFF
15dB
Tone and volume adjustment
12